National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

22°F

-6°C

Humidity 63%
Wind Speed NW 13 G 20 mph
Barometer 30.14 in (1020.6 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 5 Jan 3:56 am EST
Extended Forecast for

South Dennis MA

  • Today

    Today: Increasing clouds, with a high near 34. Northwest wind 5 to 7 mph becoming calm in the afternoon.

    High: 34 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Snow and freezing rain likely before 2am, then a chance of freezing rain between 2am and 3am, then a chance of rain after 3am. Cloudy, with a temperature rising to around 33 by 3am. Light south wind. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 26 °F⇑

    Wintry Mix
    Likely

  • Tuesday

    Tuesday: Cloudy, with a high near 41. Calm wind becoming east around 6 mph.

    High: 41 °F

    Cloudy

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 1am. Cloudy, with a low around 34. Calm wind becoming south around 6 mph after midnight. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Rain Likely

  • Wednesday

    Wednesday: A chance of rain, mainly before 10am. Partly sunny, with a high near 43. West wind 6 to 10 mph. Chance of precipitation is 40%.

    High: 43 °F

    Chance Rain
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 30. West wind around 6 mph.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 41. West wind 3 to 7 mph.

    High: 41 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 33. Calm wind becoming south around 5 mph after midnight.

    Low: 33 °F

    Partly Cloudy

  • Friday

    Friday: A chance of rain after 9am. Mostly cloudy, with a high near 47. South wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 47 °F

    Chance Rain

Detailed Forecast

Today
Increasing clouds, with a high near 34. Northwest wind 5 to 7 mph becoming calm in the afternoon.
Tonight
Snow and freezing rain likely before 2am, then a chance of freezing rain between 2am and 3am, then a chance of rain after 3am. Cloudy, with a temperature rising to around 33 by 3am. Light south wind. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Tuesday
Cloudy, with a high near 41. Calm wind becoming east around 6 mph.
Tuesday Night
Rain likely, mainly after 1am. Cloudy, with a low around 34. Calm wind becoming south around 6 mph after midnight. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of rain, mainly before 10am. Partly sunny, with a high near 43. West wind 6 to 10 mph. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 30. West wind around 6 mph.
Thursday
Sunny, with a high near 41. West wind 3 to 7 mph.
Thursday Night
Partly cloudy, with a low around 33. Calm wind becoming south around 5 mph after midnight.
Friday
A chance of rain after 9am. Mostly cloudy, with a high near 47. South wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Friday Night
Rain likely, mainly between 8pm and 4am. Cloudy, with a low around 39. Southwest wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday
Rain likely. Cloudy, with a high near 49. South wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Saturday Night
Rain likely. Mostly cloudy, with a low around 34. Southwest wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Sunday
A chance of rain. Mostly cloudy, with a high near 42. West wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
2:03 am EST Jan 5, 2026
Forecast Valid:
4am EST Jan 5, 2026-6pm EST Jan 11, 2026
 
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Additional Resources

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Chance of Precipitation